2nd largest company end of May?

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Active sub-markets

Market context

The race for the world’s second-largest company by market capitalisation is now essentially a question of whether any of the current top tier can overtake Apple before month-end. Recent market data has NVIDIA well clear at the top, with Alphabet, Apple and Microsoft separated by a relatively modest gap underneath, which makes the second place slot more contestable than the overall leader. As of mid-May, Apple has been trading below both Alphabet and NVIDIA on several market-cap rankings, so the current 0% implied probability looks tied to the market’s view that it would need a sharp, sustained move to regain second place before the closing snapshot on 31 May.

Comparable cases show that these rankings can change quickly around earnings, product launches and broad sector moves, but they usually revert if the gap is driven by a one-day valuation spike rather than a lasting re-rating. In late April and early May, market-cap leaders were still dominated by the same large-cap technology names, with Apple, Microsoft, Alphabet and Amazon all moving within the same broad group rather than breaking away decisively. For traders, the main catalysts are upcoming company updates, any shift in AI-linked sentiment across megacap tech, and movements in the Nasdaq that could reorder valuations at the close. Clear reporting from market-cap trackers and mainstream financial press will matter most if one firm’s market value briefly overtakes another in the final days of the month.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.